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CVE-2024-49038

29
FAUCET Score

CVE-2024-49038 is a critical cross-site scripting (XSS) vulnerability in Microsoft Copilot Studio, allowing an unauthenticated attacker to achieve elevation of privilege over a network. With a CVSS score of 9.6, this low-complexity attack can lead to high impact on confidentiality, integrity, and availability. While not currently listed in CISA's KEV catalog, its FAUCET Risk Score of 75/100 and recent media coverage indicate significant concern. There is no public exploit code available, but community discussion and media attention suggest awareness of this flaw.

Impacted Technologies

VendorProductVersion(s)CPE
Range not provided by sourceCPE matchmatch criteria
cpe:2.3:a:microsoft:copilot_studio:-:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

9.3CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
5.8
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.97%
Probability of exploitation in next 30 days
EPSS Percentile
58.3%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0097 is in the 66th percentile among its peer group of 834 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.8 Bluesky, 0.5 Mastodon, and 1.2 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.1 Security Researcher mentions.

Remediation

Vendor Patches (1)

microsoftvendor investigatingvia nvd_reference
View patch

Vendor Advisories (1)

microsoft2024-Nov/CVE-2024-49038Critical

Microsoft Copilot Studio Elevation Of Privilege Vulnerability

Nov 12, 2024

References

msrc.microsoft.com / update-guide/vulnerability/CVE-2024-49038
Vendor Advisory